CN109816841A - The entrance guard device of finger vena identification - Google Patents
The entrance guard device of finger vena identification Download PDFInfo
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- CN109816841A CN109816841A CN201910260388.1A CN201910260388A CN109816841A CN 109816841 A CN109816841 A CN 109816841A CN 201910260388 A CN201910260388 A CN 201910260388A CN 109816841 A CN109816841 A CN 109816841A
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- finger
- acquisition
- vein
- circuit
- arm processor
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Abstract
The present invention relates to biometrics identification technology fields, propose a kind of entrance guard device of finger vena identification, it is characterised in that: including three parts, acquisition terminal, lock body part, remote server.Acquisition terminal includes power supply, power driving circuit, refers to venous collection circuit, arm processor, LCD display circuit, LCD display, audio output circuit, loudspeaker and bluetooth module, lock body part includes electromagnetic lock and bluetooth receiving module, and remote server is PC computer.Power supply is connected by power driving circuit with arm processor, refer to that venous collection circuit is connected with arm processor, intercommunication visual information is transferred to LCD display by LCD display circuit by arm processor, audio prompt is spread out of by loudspeaker by audio output circuit, arm processor controls the logic communication between finger hand vein recognition and circuit, arm processor configures camera, remote server is transferred to Encryption Algorithm by network to be handled, and lock body part is sent information to by bluetooth module.
Description
Technical field
The present invention relates to biometrics identification technology fields, more particularly to a kind of entrance guard device of finger vena identification.
Background technique
Human body biological characteristics mainly include two major classes: external biological characteristic and Internal biological feature.External biological characteristic is such as
Fingerprint, iris and face etc..Internal biological feature such as finger vena, hand back vein and palm vein etc..In external biological characteristic
In, since fingerprint recognition has the characteristics that very strong uniqueness, stability, ease for use, application is extremely wide.But in fingerprint
In identification, must be requested that user keeps finger clean, smooth in typing fingerprint, because of any dirty east being present on fingerprint
West or stain can bring difficulty to identification, and fingerprint is easy to forge, and causes the safety coefficient of fingerprint identification technology relatively low,
Compared with external biological characteristic, Internal biological feature is difficult to steal and forge, therefore has higher security performance, raw in inside
In object feature, because finger vein features have very strong generality and uniqueness, finger vena identification becomes in recent years
The frontier that biological identification technology is opened up.
Access control system is widely used in the authentication requirement to personnel such as hotel, customs, cell, exhibitions, railway station
Very high place.Access control system on the market, which mostly uses greatly, at present swipes the card, inputs the control modes such as password.When user enters, need
It needs as swiping the card by bus, gently contact or close card reader, so that it may read card image, carry out the behaviour that swipes the card
Make；Alternatively, needing to input the password being set in advance in access control system, can just enter after password match.However it is actually answering
In, IC card may lose, and password may be forgotten by user, cause inconvenience to entrance guard management.Moreover, there is also a cards
Multi-purpose situation is unfavorable for personnel's unified management.
Summary of the invention
The present invention provides a kind of entrance guard devices of finger vena identification.
The entrance guard device of finger vena identification mainly includes three parts, acquisition terminal, lock body component, server.Acquisition is eventually
End is the core equipment of whole device, including power supply, power driving circuit, refers to that venous collection circuit, arm processor, LCD are shown
Circuit, LCD display, audio output circuit, loudspeaker and bluetooth sending module, lock body component include that electromagnetic lock and bluetooth receive
Module, server are PC computer.
Power supply is connected by power driving circuit with arm processor, refers to that venous collection circuit is connected with arm processor, ARM
Intercommunication visual information is transferred to LCD display by LCD display circuit by processor, by audio output circuit by audio prompt
It is spread out of by loudspeaker, arm processor controls the logic communication between finger hand vein recognition and circuit, arm processor configuration
Camera is transferred to remote server with Encryption Algorithm by network and is handled, and sends information to lock by bluetooth module
Body portion.The entrance guard device course of work of finger vena identification is as follows:
1. finger vein image acquisition, collector acquire every time 3 candidate pictures be transmitted to local ARM carry out it is preliminary mutual
Correlation ratio pair after determination is the same finger vein, will select picture by network transmission into server after 3；
2. finger vein features are extracted, a large amount of calculate is carried out in the server and extracts vein pattern, and establishes database
Identity information is matched into storage with vein pattern；
3. finger vein features compare, acquisition is needed the vein picture compared by collector before comparing, by network
It is transferred to server, vein pattern is extracted after being calculated, and be compared with the vein pattern in database, match point
It is at most and more than the matching object of threshold value most probable item, is determined as successful match.
Preferably, acquisition terminal: it is responsible for carrying out basic interaction with user；Remote server: be responsible for image operation with
Data storing work；Lock body component: it is responsible for the control to door lock, realizes the physical effect of gate inhibition.Voice module: according to finger vein
Recognition result and access control information issue voice reminder information to user；Touch screen: it is carried out according to different operational circumstances
Corresponding key and dialog box prompt.
Of the invention is a little, separates acquisition with calculating, effectively reduces hardware cost, and realization is one-to-many, one
Server is that multiple acquisition terminals handle data.Acquisition terminal and door lock components, which are realized, to be wirelessly communicated, and may be implemented one
Acquisition terminal controls multiple door lock components.
Of the invention is a little, during referring to hand vein recognition, the posture being put into due to finger is different, illumination not
Together.It is difficult to ensure that the effective information that same individual is extracted when referring to the template and matching that acquire when vein typing is consistent.Greatly
Majority can all be rotated, be deviated.This brings no small challenge to high-precision identification.Based on this, the invention proposes one kind to change
Into Zernike square recognizer, preferably to characterize with this and refer to the global characteristics of veinprint, improve accuracy of identification.
Detailed description of the invention
Fig. 1 is the integral frame of the entrance guard device of finger vena of the present invention identification
Fig. 2 is schematic diagram inside finger vein image acquisition device of the present invention
Fig. 3 is the entrance guard device transmission process frame structure schematic diagram of finger vena of the present invention identification.
Specific embodiment
With reference to embodiment and compares attached drawing the present invention will be described.
As shown in Figure 1, giving system structure diagram of the invention, the entrance guard device of finger vena identification mainly includes
Door lock components, acquisition terminal and server three parts composition.Acquisition terminal carries out data interaction by network and server, adopts
Collection terminal is communicated by bluetooth with door lock components.Various components may be implemented to work independently and can also be worked with networking, and one
The control to multiple door lock components may be implemented in acquisition terminal, while a server can undertake the place of the data of multiple terminals
Reason and preservation.
As shown in Fig. 2, being the most critical part of this entrance guard device for finger vein acquirer, all figures all pass through
The acquisition of this device, respectively infrared light supply, soft-touch control, optical filter and cmos imaging element from top to bottom.The present invention adopts
With the image-forming principle of transmission, infrared light penetrates finger from top irradiation, and cmos imaging element collects vein image.If acquisition
When near-infrared light source exposure intensity in device is too high, the pictorial information of acquisition will be made to lose, if near-infrared light source
It will cause the phenomenon that collected picture generates noise when exposure intensity is too low again.And it is possible to when the displacement of finger is bigger than normal
It will cause shade phenomenon.So the present invention devises an acquisition shell and said elements is fixed, it is ensured that collect good
Image.Acquisition device devises unique shell mechanism, and in order to avoid finger rotation bring influences, when this secondary design is filtering
The upper surface of piece is provided with the groove that can place finger.In addition to this in order to guarantee the relatively fixed of pickup area and recessed
A baffle is devised before slot.It is added to one piece of optical filter above camera simultaneously, can not only filter out visible light pair
The influence of picture also acts the effect that protection camera lens blocks dust.
Real-time frame structural schematic diagram as shown in Figure 3, server communicated with acquisition terminal and door lock components with adopt
The communication for collecting terminal is encrypted using this frame structure.Frame head: the starting point for indicating that frame starts accounts for 1 byte, can be as needed
Definition is indicated here with 0x36；Frame length: accounting for there are two byte, and high byte is indicated with 0x00, and low byte is fixed according to physical length
Justice；Key: communication network both ends both sides agreement is consistent, and key occupies 8 bytes；It transmits data: indicating transmission information herein
Real time data is up to 1024bytes；Terminate: indicate frame end, occupy 1 byte can define indicated here with 0x36.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. the entrance guard device of finger vena identification, it is characterised in that: including three parts, acquisition terminal, lock body part, remote service
Device.Acquisition terminal includes power supply, power driving circuit, refers to that venous collection circuit, arm processor, LCD display circuit, LCD are shown
Screen, audio output circuit, loudspeaker and bluetooth module, lock body part include electromagnetic lock and bluetooth receiving module, remote server
For PC computer.Power supply is connected by power driving circuit with arm processor, refers to that venous collection circuit is connected with arm processor,
Intercommunication visual information is transferred to LCD display by LCD display circuit by arm processor, by audio output circuit by audio
Prompt is spread out of by loudspeaker, and arm processor controls the logic communication between finger hand vein recognition and circuit, arm processor
Camera is configured, remote server is transferred to Encryption Algorithm by network and is handled, is sent information by bluetooth module
To lock body part.
2. the entrance guard device of finger vena identification according to claim 1, it is characterised in that: totally three kinds of courses of work, packet
Include finger vein image acquisition, finger vein features are extracted, finger vein features compare.Finger vein image acquisition, collector
The candidate pictures of acquisition 3, which are transmitted to local ARM and carry out preliminary cross-correlation, every time compares, after determination is the same finger vein,
Picture will be selected by network transmission into server after 3；Finger vein features are extracted, and are largely calculated in the server
Vein pattern is extracted, and establishes database and identity information is matched into storage with vein pattern；Finger vein features compare, before comparison
Acquisition is needed the vein picture compared to extract after being calculated quiet by network transmission to server by collector
Arteries and veins feature, and be compared with the vein pattern in database, match point is most may be used at most and more than the matching object of threshold value
Energy item, is determined as successful match.
3. the entrance guard device of finger vena identification according to claim 1, it is characterised in that: server is PC computer, can
Database is written in corresponding finger venous information, and identical cryptographic keys are used with terminal.The present invention is quiet using finger
There is arteries and veins identification technology contactless identity to be verified, and security performance is high, easy to use, and ARM plate has higher integrated
Degree, faster real-time operation speed and stronger extended capability reduce the volume of system and power consumption, refer to that intravenous data passes through
After encryption on storing data library, increase the safety of total system.Acquisition terminal is communicated with lock body component acquisition with bluetooth,
Wireless control is realized, the flexibility ratio of equipment is improved.
4. the entrance guard device of finger vena identification according to claim 1, it is characterised in that: acquisition device is using vertical knot
Structure, from top to bottom respectively infrared light supply, soft-touch control, optical filter and cmos imaging element.The present invention is using the imaging transmitted
Principle, infrared light penetrate finger from top irradiation, and cmos imaging element collects vein image.If close red in acquisition device
When outer light source exposure intensity is too high, the pictorial information of acquisition will be made to lose, if the exposure intensity of near-infrared light source is too low
When will cause the phenomenon that collected picture generates noise again.And it is existing to be possible to will cause shade when the displacement of finger is bigger than normal
As.So the present invention devises an acquisition shell and said elements is fixed, it is ensured that collect good image.
5. the entrance guard device of finger vena identification according to claim 1, it is characterised in that: acquisition device devises uniqueness
Shell mechanism, in order to avoid finger rotation bring influences, being provided with one in the upper surface of optical filter when this secondary design can be with
Place the groove of finger.In addition to this in order to guarantee the relatively fixed of pickup area and devise before groove a gear
Plate.It is added to one piece of optical filter above camera simultaneously, can not only filter out influence of the visible light to picture, also act guarantor
Goggle head blocks the effect of dust.
6. the entrance guard device of finger vena identification according to claim 1, it is characterised in that: in the process for referring to hand vein recognition
In, the posture difference, the illumination difference that are put into due to finger.It is difficult to ensure that same individual refers to the template that is acquired when vein typing with
The effective information extracted when matching is consistent.It is most of all to rotate, deviate.This brings not small to high-precision identification
Challenge.Based on this, the invention proposes a kind of improved Zernike square recognizers, carry out better characterize with this and refer to vein pattern
The global characteristics on road improve accuracy of identification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910260388.1A CN109816841A (en) | 2019-04-01 | 2019-04-01 | The entrance guard device of finger vena identification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910260388.1A CN109816841A (en) | 2019-04-01 | 2019-04-01 | The entrance guard device of finger vena identification |
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| Publication Number | Publication Date |
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| CN109816841A true CN109816841A (en) | 2019-05-28 |
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| CN201910260388.1A Pending CN109816841A (en) | 2019-04-01 | 2019-04-01 | The entrance guard device of finger vena identification |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915588A (en) * | 2012-11-02 | 2013-02-06 | 深圳市普罗巴克科技股份有限公司 | Bluetooth technology-based intelligent lock system and control method thereof |
| WO2016019680A1 (en) * | 2014-08-08 | 2016-02-11 | 常熟安智生物识别技术有限公司 | Finger vein identification-based smart building visual intercom system |
| CN107288443A (en) * | 2017-08-16 | 2017-10-24 | 上海荷福人工智能科技（集团）有限公司 | One kind refers to vein intelligent door lock control system |
| CN108537137A (en) * | 2018-03-19 | 2018-09-14 | 安徽大学 | Differentiate the multi-modal biological characteristic fusion identification method of correlation analysis based on label |
| CN208126413U (en) * | 2018-05-21 | 2018-11-20 | 山西圣点世纪科技股份有限公司 | A kind of dorsal digital vein and refer to back line Collect jointly identification device |
| CN109326031A (en) * | 2018-10-07 | 2019-02-12 | 常熟安智生物识别技术有限公司 | It is a kind of to use the access control system for referring to hand vein recognition |
-
2019
- 2019-04-01 CN CN201910260388.1A patent/CN109816841A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915588A (en) * | 2012-11-02 | 2013-02-06 | 深圳市普罗巴克科技股份有限公司 | Bluetooth technology-based intelligent lock system and control method thereof |
| WO2016019680A1 (en) * | 2014-08-08 | 2016-02-11 | 常熟安智生物识别技术有限公司 | Finger vein identification-based smart building visual intercom system |
| CN107288443A (en) * | 2017-08-16 | 2017-10-24 | 上海荷福人工智能科技（集团）有限公司 | One kind refers to vein intelligent door lock control system |
| CN108537137A (en) * | 2018-03-19 | 2018-09-14 | 安徽大学 | Differentiate the multi-modal biological characteristic fusion identification method of correlation analysis based on label |
| CN208126413U (en) * | 2018-05-21 | 2018-11-20 | 山西圣点世纪科技股份有限公司 | A kind of dorsal digital vein and refer to back line Collect jointly identification device |
| CN109326031A (en) * | 2018-10-07 | 2019-02-12 | 常熟安智生物识别技术有限公司 | It is a kind of to use the access control system for referring to hand vein recognition |
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